Example: Invoking a UDF or Method Using a RETURNS Specification - Teradata Database - Teradata Vantage NewSQL Engine

     CREATE TABLE t1 (
       int_col      INTEGER,
       var_char_col VARCHAR(40) CHARACTER SET UNICODE);

     CREATE TABLE t2 (
       int_col     INTEGER,
       decimal_col DECIMAL (10, 6));

     CREATE FUNCTION udf_1(
       A    INTEGER,
       B    TD_ANYTYPE)
       RETURNS TD_ANYTYPE;

     CREATE FUNCTION udf_3(
       A    INTEGER,
       B    TD_ANYTYPE)
       RETURNS TD_ANYTYPE;

The following example invokes udf_1 using t1.int_col and t2.decimal_col as parameters and DECIMAL(10,6) as the explicitly specified return data type.

     SELECT (udf_1 (t1.int_col, t2.decimal_col)
     RETURNS DECIMAL(10,6));

The following example invokes udf_3 using t1.var_char_col and t2.decimal_col as parameters and VARCHAR(40) as the explicitly specified return data type.

     SELECT (udf_3 (t1.var_char_col, t2.decimal_col)
     RETURNS VARCHAR(40) CHARACTER SET LATIN);

The final example invokes method_2 using t2.decimal_col as a parameter and DECIMAL(10,6) as the explicitly specified return data type.

     SELECT udt_col.(method_2(t2.decimal_col)
     RETURNS DECIMAL(10,6));